Question

I am experimenting this error when I execute orm:schema-tool:create. It’s my first time with Doctrinem, so I’ve got several doubts, the one which -I think- causes the error is that I’ve got a class Player with 3 array of Comment objects. My idea of the db scheme is:

player_comment(id_player,id_comment)
commentsliked(id_player,id_comment)
commentsdisliked(id_player,id_comment)

Notice that comments is a bidirectional relationship although commentsLiked and commentsDisliked are not.

As far as I’ve understood, Doctrine wants to name the 3 previous tables “player_comment”.

Thanks in advance.

My class Player look like this:

/**
 * @Entity @Table(name="players") 
 */
class Player
{
/** 
 * @Id @Column(type="integer") @GeneratedValue 
 * @var int
**/
private $id;

/** 
     * @OneToMany(targetEntity="Comment", mappedBy="writer")
 * @var Comment[]
    **/
private $comments = null;
/**
 * @ManyToMany(targetEntity="Comment")
     * @Table(name="commentsliked")
 * @var Comment[]
**/
private $commentsLiked = null;
/**
 * @ManyToMany(targetEntity="Comment")
     * @Table(name="commentsdisliked")
 * @var Comment[]
**/
private $commentDisliked = null;
}

My class Comment look like this:

/**
 * @Entity @Table(name="comments")
 */
class Comment {
/** 
 * @Id @Column(type="integer") @GeneratedValue 
 * @var int
**/
private $id;

/** 
     * @ManyToOne(targetEntity="Player", inversedBy="comments") 
 * @var Player
    **/
private $writer;
}

Answer 1

I’ve used @JoinTable as indicated in http://docs.doctrine-project.org/en/latest/reference/association-mapping.html#many-to-many-unidirectional.

I updated the annotations of commentsLiked and commentsDisliked:

/**
 * @ManyToMany(targetEntity="Comment")
 * @JoinTable(name="commentsliked",
 * joinColumns={@JoinColumn(name="player_id", referencedColumnName="id")},
 * inverseJoinColumns={@JoinColumn(name="commment_id",referencedColumnName="id")})
 * @var Coments[]
**/
private $commentsLiked = null;
/**
 * @ManyToMany(targetEntity="Comment")
 * @JoinTable(name="commentsDisliked",
 * joinColumns={@JoinColumn(name="player_id", referencedColumnName="id")},
 * inverseJoinColumns={@JoinColumn(name="comment_id",referencedColumnName="id")})     )
 * @var Comment[]
**/
private $commentsDisliked = null;